JP2002314211A - Circuit connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit connection structure which is superior in productivity and is inexpensive. SOLUTION: In this circuit connection structure, a connection member 8 can be formed of single body made of metallic material, and the structure is made more inexpensive and productive than the conventional one that is comprised of an insulator and a conductor embedded in the insulator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit connection structure suitable for use in a transmission / reception unit of a portable telephone.

[0002]

2. Description of the Related Art A conventional circuit connection structure will be described with reference to FIGS. 6 and 7. On a circuit board 51 composed of a printed board, wiring patterns 52 and 53 are provided by a conductive material. An electric component 54 composed of a chip-type resistor, capacitor, IC chip, or the like is surface-mounted by soldering to form a first electric circuit 55 which is an RF circuit, and a wiring pattern 52 of the first electric circuit 55 is formed. Are pulled out in a state where a plurality of first land portions 52a are juxtaposed.

On the wiring pattern 53, an electric component 56 composed of a chip-type resistor, capacitor, IC chip or the like is surface-mounted by soldering to form a second electric circuit 57 as a baseband circuit. A plurality of second land portions 53a are pulled out from the wiring pattern 53 of the second electric circuit 57 in a state where they are arranged in parallel.
The second land 53a is provided at a position adjacent to the first land 52a.

The connecting member 58 comprises a rod-shaped insulator 59 and a plurality of conductors 60 made of a metal plate embedded in the insulator 59. The connecting member 58 is placed on the circuit board 51, and each of the conductors 60 is
Are connected to the land portions 52a and 53a by soldering. The connection member 58 connects the first and second land portions 52a and 53a and connects the first and second electric circuits 55 and 57 to each other.

A method of manufacturing a circuit connection structure having such a configuration will be described. First, electric components 54 and 56 are mounted on a circuit board 51, and first and second electric circuits 55 and 5 are provided.
7 is formed. Next, the first and second electric circuits 55 and 57
In a state where the connection is not established (a state where the connecting member 58 is not mounted), a probe (not shown) of a measuring instrument (not shown) is applied to the first land portion 52a, and The performance measurement and inspection of the electric circuit 55 are performed.

Then, a probe (not shown) of a measuring instrument (not shown) is applied to the second land portion 53a to measure the performance of the second electric circuit 57, perform inspection, and the like. Is mounted on the circuit board 51, and the first and second land portions 52a and 53a are connected by soldering.
When the first and second electric circuits 55 and 57 are connected to each other, the manufacture is completed.

[0007]

In the conventional circuit connection structure, electric components 54 and 56 are soldered on a circuit board 51 to form first and second electric circuits 55 and 57, and then an inspection is performed. After that, since the connection member 58 is soldered on the circuit board 51, two soldering steps are required, resulting in poor productivity and high cost.

Accordingly, an object of the present invention is to provide an inexpensive circuit connection structure with good productivity.

[0009]

Means for Solving the Problems As a first means for solving the above problems, one circuit board provided with a wiring pattern made of a conductive material, and a first circuit board formed on the circuit board are provided. Connecting the second electric circuit, the first and second land portions drawn from the wiring patterns of the first and second electric circuits, and the first and second land portions, A connection member for connecting the first and second electric circuits to each other, wherein the connection member is soldered to one of the first and second lands, and is electrically connected to the mounting portion. And a contact portion capable of contacting the other of the first and second land portions. When the contact portion is pressed, the contact portion is moved to the first or second land portion. And the first and second electric circuits are connected to each other by the connection member. It has a configuration which is adapted to connect.

[0010] As a second solution, the first and second methods are described.
A plurality of the second lands are respectively arranged in parallel, and a plurality of the connection members are respectively arranged corresponding to the plurality of the first and second lands, and the plurality of the connection members are provided. Thereby, each of the plurality of first and second land portions is connected.

As a third solution, the connection member is housed in a case together with the circuit board, and the contact portion is pressed by the case to connect the first and second electric circuits. The configuration is as described above. Also,
As a fourth solution, the connection member is formed of a metal plate and includes the flat attachment portion and the contact portion cut and raised from the attachment portion. As a fifth solution, the connection member is constituted by the U-shaped attachment portion and the contact portion cut and raised at the center of the attachment portion.

As a sixth solution, a plurality of the connecting members are connected by a connecting portion, and after the attaching portion is soldered to the land portion, the connecting portion is cut off, and each of the connecting members is cut. The connection member is configured to be separated.
Further, as a seventh solution, the first electric circuit is R
The second electric circuit is constituted by a baseband circuit while being constituted by an F circuit.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings of the circuit connection structure of the present invention, FIG. 1 is a sectional view of a main part according to a first embodiment of the circuit connection structure of the present invention, and FIG. 2 is a circuit connection structure of the present invention. First
FIG. 3 is a plan view of a circuit board according to an embodiment, FIG. 3 is a perspective view of a main part according to a first embodiment of the circuit connection structure of the present invention, and FIG. FIG. 5 is an explanatory view showing a manufacturing method, and FIG. 5 is a perspective view of a main part of a connection member according to a second embodiment of the circuit connection structure of the present invention.

Next, the structure of a first embodiment of the circuit connection structure of the present invention will be described with reference to FIGS. 1 to 4. A circuit board 1 composed of a printed board is provided with wiring patterns 2, 3 by a conductive material. On the wiring pattern 2, an electric component 4 composed of a chip-type resistor, capacitor, IC chip or the like is surface-mounted by soldering to form a first electric circuit 5, which is an RF circuit. A plurality of first land portions 2a are drawn out from the wiring pattern 2 of one electric circuit 5 in a state of being arranged in parallel.

On the wiring pattern 3, an electric component 6 composed of a chip-type resistor, capacitor, IC chip or the like is surface-mounted by soldering to form a second electric circuit 7 as a baseband circuit. From the wiring pattern 3 of the second electric circuit 7, a plurality of second land portions 3 are formed.
a is pulled out in a state of being juxtaposed, and the second land portion 3a is disposed at a position adjacent to the first land portion 2a.

The connecting member 8 is formed of a metal plate having a spring property, and has a U-shaped flat plate-shaped mounting portion 8a and a substantially U-shaped contact portion formed by cutting and raising the center of the mounting portion 8a. 8
b, and a plurality of the connecting members 8 are provided, and are mounted by soldering in a state where the mounting portions 8a of the respective connecting members 8 are mounted on the second land portions 3a.
It is electrically connected to the second land 3a. When the connecting member 8 is attached, the tip of the contact portion 8b faces the first land portion 2a with a predetermined interval in a state of facing the first land portion 2a. I have.

Lower case 9 made of a synthetic resin molded product
Has a bottom wall 9a, a side wall 9b extending upward from the outer periphery of the bottom wall 9a, and a storage portion 9c formed inside.
The connection member 8 is housed together with the circuit board 1 in the housing 9c of the case 9, and the circuit board 1 is attached to the case 9 by appropriate means.

Upper case 1 made of a synthetic resin molded product
Reference numeral 0 denotes an upper wall 10a, a side wall 10b extending downward from the outer periphery of the upper wall 10a, and a storage portion 10c formed therein.
And a pressing portion 10d including a convex portion extending downward from the upper wall 10a in the storage portion 10c. The case 10 is combined with the lower case 9 so as to cover the upper side of the circuit board 1, and the case 10 and the case 9 are attached by appropriate means.

Then, when the cases 9 and 10 are combined, the upper portions of the contact portions 8b of the plurality of connecting members 8 are pressed by the pressing portions 10d, and the tip portions of the contact portions 8b are respectively the first portions. A state in which the first and second land portions 2a and 3a are connected by the connecting member 8 to be in contact with the land portion 2a and the first and second electric circuits 5 and 7 are electrically connected to each other; Has become.

A method of manufacturing a circuit connection structure having such a configuration will be described. First, as shown in FIG. 4, electrical components 4, 6 and a connection member 8 are simultaneously mounted on a circuit board 1, and First, the second electric circuits 5 and 7 are formed. At this time, in a state where the contact portion 8b of the connection member 8 does not contact the first land portion 2a and the first and second electric circuits 5 and 7 are not connected, the measuring device (not shown) is used. The probe (not shown) is applied to the first land portion 2a to perform performance measurement, inspection, and the like of the first electric circuit 5.

Next, a probe (not shown) of a measuring instrument (not shown) is applied to the second land portion 3a to perform performance measurement, inspection and the like of the second electric circuit 7, so that the circuit board 1 is attached. To manufacture. Next, after attaching the circuit board 1 to the lower case 9, the upper case 10 is combined with the lower case 9.

Then, the contact portion 8b is pushed in the direction of the arrow in FIG.
b each contact the first land 2a,
By the connecting member 8, the first and second land portions 2a, 3a
The connection is established and the first and second electric circuits 5 and 7 are electrically connected to each other, and the manufacture thereof is completed.
With such a configuration, the first and second electric circuits 5, 7
After the inspection or the like, the soldering work can be eliminated, and a mobile phone or the like is formed in this way.

FIG. 5 shows a second example of the circuit connection structure of the present invention.
In the second embodiment, a plurality of connection members 8 arranged side by side are connected to each other by a connection portion 8c, and the plurality of connection members 8 connected to each other are connected to a second land portion 3.
After being soldered to a at the same time, the connecting portion 8c is cut,
Each connecting member 8 is separated. The other configuration is the same as that of the first embodiment, and the description is omitted here, and the same components are denoted by the same reference numerals.

In this embodiment, the first and second electric circuits have been described as applied to the RF circuit and the baseband circuit. However, it is needless to say that the first and second electric circuits can be applied to other electric circuits. Further, although the connection member 8 has been described as having the attachment portion 8a attached to the second land portion 3a, the connection member 8 may be attached to the first land portion 2a. Further, the connection member 8 is described using a metal plate, but a metal wire or the like may be used. Further, the configuration and the shape of the connection member 8 are not limited to those in the above-described embodiment. Various configurations,
Of course, shapes can be applied. Further, the connection member 8 is pressed by the case 10, but may be pressed by another member.

[0025]

According to the circuit connection structure of the present invention, the connecting member 8 is attached to one of the first and second lands 2a and 3a by soldering and is electrically connected to the mounting portion 8a.
And a contact portion 8b capable of contacting one of the first and second land portions 2a and 3a. When the contact portion 8b is pressed, the contact portion 8b The first and second electric circuits 5 and 7 are connected to each other by the connecting member 8 by contacting one of the lands 2a and 3a. At the same time, it can be mounted on the circuit board 1 by soldering, and the first and second
After the inspection and the like of the electric circuits 5 and 7 are completed, the first and second electric circuits 5 and 7 can be connected by the connecting member 8, so that the circuit connection with higher productivity and lower cost than before can be achieved. Can provide structure. Further, the connection member 8 can be formed of a single metal material, and is less expensive and has good productivity as compared with a conventional one composed of an insulator and a conductor embedded in the insulator. can get.

The first and second land portions 2a, 3a
A plurality of connection members 8 are respectively arranged in parallel with the plurality of first or second land portions 2a, 3a, and a plurality of connection members 8 Since the first and second land portions 2a and 3a are connected to each other, a small space member having a good space factor can be obtained.

The connection member 8 is housed in the case together with the circuit board 1, and the contact portion 8b is pressed by the case to connect the first and second electric circuits 5 and 7 to each other. At the same time as the attachment, the first and second electric circuits 5 and 7 can be connected to each other, so that an inexpensive circuit connection structure with good productivity can be provided.

The connecting member 8 is formed of a metal plate and includes a flat mounting portion 8a and a contact portion 8b cut and raised from the mounting portion 8a. Inexpensive ones are obtained.

The connecting member 8 has a U-shaped mounting portion 8a.
And the contact portion 8b cut and raised at the center of the mounting portion 8a. When the mounting portion 8a is mounted on the circuit board 1, the mounting state of the connection member 8 is stabilized.
Subsequent soldering work can be easily performed.

The connecting member 8 includes a plurality of connecting portions 8c.
After the connecting portions 8a are soldered to the lands, the connecting portions 8c are cut to separate the connecting members 8, so that a plurality of connecting members 8 can be simultaneously placed on the lands. As a result, workability is improved, and a product with good productivity is obtained. Further, since the first electric circuit 5 is constituted by an RF circuit and the second electric circuit 7 is constituted by a baseband circuit, a circuit which is particularly suitable for a transmission / reception unit is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part according to a first embodiment of a circuit connection structure of the present invention.

FIG. 2 is a plan view of a circuit board according to a first embodiment of the circuit connection structure of the present invention.

FIG. 3 is a perspective view of a main part according to the first embodiment of the circuit connection structure of the present invention.

FIG. 4 is an explanatory view showing a method of manufacturing the circuit connection structure according to the first embodiment of the present invention.

FIG. 5 is a perspective view of a main part of a connection member according to a second embodiment of the circuit connection structure of the present invention.

FIG. 6 is a plan view of a main part showing a conventional circuit connection structure.

FIG. 7 is an explanatory diagram of a manufacturing method according to a conventional circuit connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Wiring pattern 2a 1st land part 3 Wiring pattern 3a 2nd land part 4 Electric component 5 First electric circuit 6 Electric component 7 Second electric circuit 8 Connection member 8a Attachment part 8b Contact part 8c Connection Unit 9 Case 9a Bottom wall 9b Side wall 9c Storage unit 10 Case 10a Top wall 10b Side wall 10c Storage unit 10c Press unit

Claims (7)

[Claims] 1. A method according to claim 1, wherein a wiring pattern made of a conductive material is provided.
A plurality of circuit boards, first and second electric circuits formed on the circuit board, and first and second land portions drawn from the wiring patterns of the first and second electric circuits. By connecting the first and second land portions, the first and second land portions are connected.
A connection member for connecting the electric circuits to each other, wherein the connection member is soldered to one of the first and second lands and electrically connected thereto, and Or a contact portion capable of contacting the other of the second land portions, and when the contact portion is pressed, the contact portion contacts one of the first and second land portions. A circuit connection structure, wherein said first and second electric circuits are connected to each other by said connection member by said connection member. 2. A plurality of the first and second lands are respectively provided in parallel, and a plurality of the connection members are respectively provided corresponding to the plurality of the first and the second lands. The circuit connection structure according to claim 1, wherein the plurality of first and second land portions are connected by the plurality of connection members. 3. The connection member is housed in a case together with the circuit board, and the contact portion is pressed by the case to connect the first and second electric circuits. The circuit connection structure according to claim 1 or 2, wherein 4. The connection member according to claim 1, wherein the connection member is formed of a metal plate, and includes the flat attachment portion and the contact portion cut and raised from the attachment portion. 4. The circuit connection structure according to any one of claims 1 to 3, 5. The circuit connection according to claim 4, wherein the connection member includes the U-shaped attachment portion and the contact portion cut and raised at a central portion of the attachment portion. Construction. 6. A plurality of connection members are connected by a connection portion, and after the attachment portion is soldered to the land portion, the connection portion is cut to separate the connection members. The circuit connection structure according to any one of claims 2 to 5, wherein: 7. The device according to claim 1, wherein the first electric circuit is constituted by an RF circuit, and the second electric circuit is constituted by a baseband circuit. Circuit connection structure.